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Service bulletin L-TT-0121-13 Rev

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10111512
Published by NHTSA2017-08-14
Manufacturer's numberL-TT-0121-13 Rev
Manufacturer's date2015-11-12
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)

NHTSA's summary

TT: Refer to the chart below for a comprehensive list of the current and previously issued USB SSTs and their applicability. This is only a reference list of tools that might be in dealership inventory and not meant to be a diagnostic or repair procedure. Generation 7 navigation systems use a USB SST to update firmware and map. Generation 8 navigation systems use a USB stick to update the firmware only.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories, Software

Vehicles listed
LEXUS CT HYBRID2013 to 2015
LEXUS ES HYBRID2013 to 2015
LEXUS ES3502013 to 2015
LEXUS GS 3502013 to 2015
LEXUS GS HYBRID2013
LEXUS GS450H2014 to 2015
LEXUS GX4602013 to 2015
LEXUS IS 2502013 to 2015
LEXUS IS 250C2013 to 2014
LEXUS IS 3502013 to 2015
LEXUS IS 350C2013 to 2014
LEXUS IS F2013 to 2014
LEXUS LS4602013 to 2015
LEXUS LS600H2013 to 2015
LEXUS LX5702013 to 2015
LEXUS NX HYBRID2015
LEXUS NX200T2015
LEXUS RC 3502015
LEXUS RC F2015
LEXUS RX HYBRID2013 to 2015
LEXUS RX3502013 to 2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.